Single-chamber mini-solid oxide fuel cells operated at a lower temperature

Ji Hyun Min, Sung Jin Ahn, Jooho Moon, Joosun Kim, Hae Weon Lee

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

The performance characteristics of a single-chamber solid oxide fuel cell (SOFCs) with micro-patterned electrode structures on the disc-type electrolyte were investigated. We selected Sm0.2Ce0.8O2-x (samarium doped ceria, or SDC) as an electrolyte, SDC-NiO cermat as an anode, and SDC-Sm0.5Sr0.5CoO3 (samarium strontium cobaltite) as a cathode for low operating temperatures (500-600°C). To fabricate complex micro-patterned electrodes on electrolytes, we used microfluidic lithography. First, patterned NiO-SDC anode was sintered at 1350°C for 4 hours, then SDC-SSC cathode was patterned and sintered at 1050°C for 8 hours, resulting in a coplanar-type, single-chamber SOFC in which the interdigitated electrode has a 100-μm line width and an anode-to-cathode distance of 100 μm. A reduction condition was proposed below 350°C using humidified hydrogen gas. The shape of electrode and microstructure was observed by scanning electron and optical microscopes. I-V characteristics of the SOFC were measured using a propane-air mixture gas by a DC source measure unit.

Original languageEnglish
Title of host publicationECS Transactions - 10th International Symposium on Solid Oxide Fuel Cells, SOFC-X
Pages947-953
Number of pages7
Edition1 PART 1
DOIs
Publication statusPublished - 2007
Event10th International Symposium on Solid Oxide Fuel Cells, SOFC-X - , Japan
Duration: 2007 Jun 32007 Jun 8

Publication series

NameECS Transactions
Number1 PART 1
Volume7
ISSN (Print)1938-5862
ISSN (Electronic)1938-6737

Other

Other10th International Symposium on Solid Oxide Fuel Cells, SOFC-X
CountryJapan
Period07/6/307/6/8

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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